Hypothesis 4 (Biological Determinism)

Evolution is the only theory that science hasn’t rejected
For the origins of life, and humans are no exception
And if behaviour has a genetic basis and it’s naturally-selected
Then human nature hasn’t changed since the days of Homo erectus
The modern-day skull houses a stone-aged mind
‘Cause achieving major change in a chromosome takes time
You know how kids like sugar on their cornflakes right?
Well, that’s evolution in action – we can follow a straight line
Back to our ancestors’ food preferences and incest-avoidance
And mate preferences, and aversion to ingesting poisons
Evolution even explains why the female chest is so boisterous
So if you think human nature is flexible, get set for disappointment
‘Cause selfish genes lead to selfish behavior
And alpha males impregnate the wives of their helpless neighbors
Human beings are socialized to deny their hellish natures
But we might as well embrace it now, and deal with the outcome later